A predetermined mixture of 2 or more gases in which each component is measured to extreme accuracy and its contents certified. It is normally used to standardize and assure the accuracy of highly sensitive laboratory equipment.
NSN 5996-01-358-5847
NSN 5930-01-400-6126
NSN 5915-00-990-4615
NSN 5935-01-564-2577
NSN 5990-01-578-5382
NSN 5985-01-301-7677
NSN 6650-01-113-4197
NSN 6620-01-061-3497
NSN 6320-01-388-1067
NSN 6145-01-514-0283
NSN 6220-00-211-6146
NSN 6685-00-642-0533